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Re: uniform expansion [message #41330 is a reply to message #41321]

Fri, 08 October 2004 03:10

Herbert Ramoser
Messages: 1
Registered: October 2004

Junior Member

mark wrote:
> Hello,
> Say I have a random 2D shape (a blob) with an irregular border (all
> pixel values equal to one). What I want to do is uniformly expand it
> in all directions such that it's increased by a constant integer
> number of pixels all around the perimeter. Subtraction of the
> original shape from the new one should yield a thin border with a
> constant width corresponding to the # of pixels the object was
> enlarged by.
> Does anyone have any suggestions... preferrably of an IDL nature?

If I am not mistaken you are asking for morphological dilation:
help bwmorh

-Herbert

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		Re: uniform expansion By: Dick Jackson on Sat, 09 October 2004 09:13
		Re: uniform expansion By: Herbert Ramoser on Fri, 08 October 2004 03:10

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